On the adsorption properties of magnetic fluids

Impact of bulk structure

Martina Kubovcikova, Igor V. Gapon, Vlasta Zavisova, Martina Koneracka, Viktor I. Petrenko, Оlaf Soltwedel, L. Almásy, Mikhail V. Avdeev, Peter Kopcansky

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Adsorption of nanoparticles from magnetic fluids (MFs) on solid surface (crystalline silicon) was studied by neutron reflectometry (NR) and related to the bulk structural organization of MFs concluded from small-angle neutron scattering (SANS). The initial aqueous MF with nanomagnetite (co-precipitation reaction) stabilized by sodium oleate and MF modified by a biocompatible polymer, poly(ethylene glycol) (PEG), were considered. Regarding the bulk structure it was confirmed in the SANS experiment that comparatively small and compact (size~30 nm) aggregates of nanoparticle in the initial sample transfer to large and developed (size>130 nm, fractal dimension 2.7) associates in the PEG modified MF. This reorganization in the aggregates correlates with the changes in the neutron reflectivity that showed that a single adsorption layer of individual nanoparticles on the oxidized silicon surface for the initial MF disappears after the PEG modification. It is concluded that all particles in the modified fluid are in the aggregates that are not adsorbed by silicon.

Original languageEnglish
Pages (from-to)67-70
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume427
DOIs
Publication statusPublished - Apr 1 2017

Fingerprint

Magnetic fluids
Adsorption
Polyethylene glycols
adsorption
fluids
Silicon
Neutron scattering
Nanoparticles
Neutrons
nanoparticles
neutron scattering
silicon
neutrons
Fractal dimension
Coprecipitation
Polymers
solid surfaces
glycols
Sodium
fractals

Keywords

  • Adsorption of magnetic nanoparticles
  • Effect of gravity
  • Ferrofluid structure
  • Ferrofluids
  • Magnetic fluids
  • Neutron reflectometry
  • Small-angle neutron scattering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kubovcikova, M., Gapon, I. V., Zavisova, V., Koneracka, M., Petrenko, V. I., Soltwedel, О., ... Kopcansky, P. (2017). On the adsorption properties of magnetic fluids: Impact of bulk structure. Journal of Magnetism and Magnetic Materials, 427, 67-70. https://doi.org/10.1016/j.jmmm.2016.10.104

On the adsorption properties of magnetic fluids : Impact of bulk structure. / Kubovcikova, Martina; Gapon, Igor V.; Zavisova, Vlasta; Koneracka, Martina; Petrenko, Viktor I.; Soltwedel, Оlaf; Almásy, L.; Avdeev, Mikhail V.; Kopcansky, Peter.

In: Journal of Magnetism and Magnetic Materials, Vol. 427, 01.04.2017, p. 67-70.

Research output: Contribution to journalArticle

Kubovcikova, M, Gapon, IV, Zavisova, V, Koneracka, M, Petrenko, VI, Soltwedel, О, Almásy, L, Avdeev, MV & Kopcansky, P 2017, 'On the adsorption properties of magnetic fluids: Impact of bulk structure', Journal of Magnetism and Magnetic Materials, vol. 427, pp. 67-70. https://doi.org/10.1016/j.jmmm.2016.10.104
Kubovcikova M, Gapon IV, Zavisova V, Koneracka M, Petrenko VI, Soltwedel О et al. On the adsorption properties of magnetic fluids: Impact of bulk structure. Journal of Magnetism and Magnetic Materials. 2017 Apr 1;427:67-70. https://doi.org/10.1016/j.jmmm.2016.10.104
Kubovcikova, Martina ; Gapon, Igor V. ; Zavisova, Vlasta ; Koneracka, Martina ; Petrenko, Viktor I. ; Soltwedel, Оlaf ; Almásy, L. ; Avdeev, Mikhail V. ; Kopcansky, Peter. / On the adsorption properties of magnetic fluids : Impact of bulk structure. In: Journal of Magnetism and Magnetic Materials. 2017 ; Vol. 427. pp. 67-70.
@article{c75d7264591e4327b9cf7276930bdff7,
title = "On the adsorption properties of magnetic fluids: Impact of bulk structure",
abstract = "Adsorption of nanoparticles from magnetic fluids (MFs) on solid surface (crystalline silicon) was studied by neutron reflectometry (NR) and related to the bulk structural organization of MFs concluded from small-angle neutron scattering (SANS). The initial aqueous MF with nanomagnetite (co-precipitation reaction) stabilized by sodium oleate and MF modified by a biocompatible polymer, poly(ethylene glycol) (PEG), were considered. Regarding the bulk structure it was confirmed in the SANS experiment that comparatively small and compact (size~30 nm) aggregates of nanoparticle in the initial sample transfer to large and developed (size>130 nm, fractal dimension 2.7) associates in the PEG modified MF. This reorganization in the aggregates correlates with the changes in the neutron reflectivity that showed that a single adsorption layer of individual nanoparticles on the oxidized silicon surface for the initial MF disappears after the PEG modification. It is concluded that all particles in the modified fluid are in the aggregates that are not adsorbed by silicon.",
keywords = "Adsorption of magnetic nanoparticles, Effect of gravity, Ferrofluid structure, Ferrofluids, Magnetic fluids, Neutron reflectometry, Small-angle neutron scattering",
author = "Martina Kubovcikova and Gapon, {Igor V.} and Vlasta Zavisova and Martina Koneracka and Petrenko, {Viktor I.} and Оlaf Soltwedel and L. Alm{\'a}sy and Avdeev, {Mikhail V.} and Peter Kopcansky",
year = "2017",
month = "4",
day = "1",
doi = "10.1016/j.jmmm.2016.10.104",
language = "English",
volume = "427",
pages = "67--70",
journal = "Journal of Magnetism and Magnetic Materials",
issn = "0304-8853",
publisher = "Elsevier",

}

TY - JOUR

T1 - On the adsorption properties of magnetic fluids

T2 - Impact of bulk structure

AU - Kubovcikova, Martina

AU - Gapon, Igor V.

AU - Zavisova, Vlasta

AU - Koneracka, Martina

AU - Petrenko, Viktor I.

AU - Soltwedel, Оlaf

AU - Almásy, L.

AU - Avdeev, Mikhail V.

AU - Kopcansky, Peter

PY - 2017/4/1

Y1 - 2017/4/1

N2 - Adsorption of nanoparticles from magnetic fluids (MFs) on solid surface (crystalline silicon) was studied by neutron reflectometry (NR) and related to the bulk structural organization of MFs concluded from small-angle neutron scattering (SANS). The initial aqueous MF with nanomagnetite (co-precipitation reaction) stabilized by sodium oleate and MF modified by a biocompatible polymer, poly(ethylene glycol) (PEG), were considered. Regarding the bulk structure it was confirmed in the SANS experiment that comparatively small and compact (size~30 nm) aggregates of nanoparticle in the initial sample transfer to large and developed (size>130 nm, fractal dimension 2.7) associates in the PEG modified MF. This reorganization in the aggregates correlates with the changes in the neutron reflectivity that showed that a single adsorption layer of individual nanoparticles on the oxidized silicon surface for the initial MF disappears after the PEG modification. It is concluded that all particles in the modified fluid are in the aggregates that are not adsorbed by silicon.

AB - Adsorption of nanoparticles from magnetic fluids (MFs) on solid surface (crystalline silicon) was studied by neutron reflectometry (NR) and related to the bulk structural organization of MFs concluded from small-angle neutron scattering (SANS). The initial aqueous MF with nanomagnetite (co-precipitation reaction) stabilized by sodium oleate and MF modified by a biocompatible polymer, poly(ethylene glycol) (PEG), were considered. Regarding the bulk structure it was confirmed in the SANS experiment that comparatively small and compact (size~30 nm) aggregates of nanoparticle in the initial sample transfer to large and developed (size>130 nm, fractal dimension 2.7) associates in the PEG modified MF. This reorganization in the aggregates correlates with the changes in the neutron reflectivity that showed that a single adsorption layer of individual nanoparticles on the oxidized silicon surface for the initial MF disappears after the PEG modification. It is concluded that all particles in the modified fluid are in the aggregates that are not adsorbed by silicon.

KW - Adsorption of magnetic nanoparticles

KW - Effect of gravity

KW - Ferrofluid structure

KW - Ferrofluids

KW - Magnetic fluids

KW - Neutron reflectometry

KW - Small-angle neutron scattering

UR - http://www.scopus.com/inward/record.url?scp=85006070807&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85006070807&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2016.10.104

DO - 10.1016/j.jmmm.2016.10.104

M3 - Article

VL - 427

SP - 67

EP - 70

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

ER -